ASTROSAT CZTI

Data Quality Report

Orbit 34224

Creation date: 2022-01-26T13:52:26.247213
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_003T01_9000004886_34224cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34224cztM0_level2_quad_clean.evt
Size (bytes)517,728,96086,037,120
Size493.7 MB 82.1 MB
Events in quadrant A2,843,069554,301
Events in quadrant B3,936,433556,036
Events in quadrant C3,709,106562,560
Events in quadrant D4,805,076534,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122272
B0153081
C0144291
D0181481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5694661.159115%
B56943025.303829%
C56942243.933966%
D56942604.566210%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7067 5695 45 45 0.64% 0.79%
B 7067 5695 230 230 3.25% 4.04%
C 7067 5695 206 206 2.91% 3.62%
D 7067 5695 239 239 3.38% 4.20%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 47 242512 1827.09 655 640 132.4
A 9 143 33573 248.77 655 640 132.4
A 10 83 17417 126.73 655 640 132.4
B 5 31 537463 4337.67 645 629 123.8
B 5 172 489092 3946.83 645 629 123.8
B 5 15 138762 1116.13 645 629 123.8
C 14 254 750355 5060.1 636 640 148.2
C 15 214 245277 1651.14 636 640 148.2
C 4 254 95485 640.14 636 640 148.2
D 8 195 916768 5856.52 639 622 156.4
D 7 80 724082 4624.76 639 622 156.4
D 1 52 334811 2136.32 639 622 156.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter